当角小于30度时，要求槽子较长，且在赶出空气方面一般效果较差。
Angles less than 30 degrees require longer tanks and are less effective in removing air pockets.
她想起屋子前有一个大石头槽子，便对小姑娘说：“小红帽，把桶拿来。”
In front of the house was a great stone trough, so she said to the child, take the pail, red-cap.
从此样板可以判断槽子有无适当的过滤，“L”板的评价是相对的评价，因此不如“H”板重要。
This panel is done to determine whether or not the tank has proper filtration. The "l" rating is a relative rating and is therefore not as important as the "h" rating.
从此样板可以判断槽子有无适当的过滤，“L”板的评价是相对的评价，因此不如“H”板重要。
This panel is done to determine whether or not the tank has proper filtration. The "l" rating is a relative rating and is therefore not as important as the "h" rating.
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